<?
/*

  This file is part of Kato Javascript Framework (http://kato.googlecode.com/)

  Copyright (c) 2007, Filip Dreger, Jan Urbański

  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are
  met:

      * Redistributions of source code must retain the above copyright
        notice, this list of conditions and the following disclaimer.
      * Redistributions in binary form must reproduce the above
        copyright notice, this list of conditions and the following
        disclaimer in the documentation and/or other materials provided
        with the distribution.
      * Neither the name of Kato Javascript Framework nor the names
        of its contributors may be used to endorse or promote products
        derived from this software without specific prior written
        permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

class ViewFactory {
	static function GetView($viewname){
		if (!preg_match('/^[a-z0-9_"]+$/i',$viewname)){
			throw new Exception('the view is not /^[a-z0-9_"]+$/i');
		}
		$filename = "{$GLOBALS['config']['classpath']}/$viewname.php";
		//DbConn::log("I'm in `" . getcwd() . "' and searching for `$filename'");
		if (file_exists($filename)){
			require_once($filename);
		        //DbConn::log("found it");
			return new $viewname($viewname);
		}
		$filename = "classes/$viewname.php";
		if (file_exists($filename)){
			require_once($filename);
			return new $viewname($viewname);
		}

		if (preg_match('/^custom_dict_/', $viewname)) {
			return new CustomDictView($viewname);
		}

		$rows = DbConn::query("select 1 from pg_class join pg_attribute on pg_class.oid = pg_attribute.attrelid where attname = 'custom_columns' and relname = $1", array($viewname));
		if (count($rows) > 0) {
			return new CustomColumnView($viewname);
		}

		// catchall

		return new DefaultView($viewname);
	}
}
?>
